[AST] asm goto labels don't have constraints, don't try to copy them.

Found by asan.

llvm-svn: 362062

1 files changed, 6 insertions, 4 deletions

diff --git a/clang/lib/AST/Stmt.cpp b/clang/lib/AST/Stmt.cpp
index e9a2c58f1a1..0a4d403106b 100644
--- a/clang/lib/AST/Stmt.cpp
+++ b/clang/lib/AST/Stmt.cpp
@@ -483,9 +483,10 @@ void GCCAsmStmt::setOutputsAndInputsAndClobbers(const ASTContext &C,
   this->Exprs = new (C) Stmt*[NumExprs];
   std::copy(Exprs, Exprs + NumExprs, this->Exprs);
 
+  unsigned NumConstraints = NumOutputs + NumInputs;
   C.Deallocate(this->Constraints);
-  this->Constraints = new (C) StringLiteral*[NumExprs];
-  std::copy(Constraints, Constraints + NumExprs, this->Constraints);
+  this->Constraints = new (C) StringLiteral*[NumConstraints];
+  std::copy(Constraints, Constraints + NumConstraints, this->Constraints);
 
   C.Deallocate(this->Clobbers);
   this->Clobbers = new (C) StringLiteral*[NumClobbers];
@@ -756,8 +757,9 @@ GCCAsmStmt::GCCAsmStmt(const ASTContext &C, SourceLocation asmloc,
   Exprs = new (C) Stmt*[NumExprs];
   std::copy(exprs, exprs + NumExprs, Exprs);
 
-  Constraints = new (C) StringLiteral*[NumExprs];
-  std::copy(constraints, constraints + NumExprs, Constraints);
+  unsigned NumConstraints = NumOutputs + NumInputs;
+  Constraints = new (C) StringLiteral*[NumConstraints];
+  std::copy(constraints, constraints + NumConstraints, Constraints);
 
   Clobbers = new (C) StringLiteral*[NumClobbers];
   std::copy(clobbers, clobbers + NumClobbers, Clobbers);